I found this one hard to do. An xyz (235) wing helped, but then I had to find and use another wing to finish.

Jay,

I didn't look carefully at the entire grid, but take a very close look at row 6.

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Marty, I am not exactly sure what you see in row 6. However, it does contain 35 which is part of the 23-235-35 xyz wing that I found, pinching off the 3 from *39 in box 8. This allowed me to pare it down to the grid below. There I found another xyz wing in 35-357-57, pinching off the 5s (from *589 & *359) in row 5, box 4.

In that original grid the only place for a 3 in row 6 is in box 5. Therefore, no other rows in that box could contain a 3. I'm not sure if you're familiar with the terminology, but that's known as "Locked Candidates", as in the 3s in row 6 are locked in box 5. Some folks also call that Box-Line Interaction.

In that original grid the only place for a 3 in row 6 is in box 5. Therefore, no other rows in that box could contain a 3. I'm not sure if you're familiar with the terminology, but that's known as "Locked Candidates", as in the 3s in row 6 are locked in box 5. Some folks also call that Box-Line Interaction.

Aha! Yes, I am familiar with the technique---though not the terminology. I should have seen it (especially after you gave a big clue), but I obviously had my blinders on. Thanks

Well, dear friends, I find every puzzle interesting, even the medium and easy ones. But I'm strange.

One thing I liked about this puzzle was that "basics" for me needed a "hard" step. Not very hard, perhaps, but "hard". The pair 38 in column 2.

Even so, with the same basics as spotted in the above postings, it took me an inexplicably long time to spot the 235 xy wing. Hmm. Maybe it is I, with my fluctuating acuity, that am interesting, not the puzzles.